Capstan



v Patented Nov. 8, |898. T. HUNTBATCH.

' C'APSTAN.

`(Applmition ed Apg. 24, 1898A (No Model.)

\\w Af,

WITNESSES v near its lower end antifriction-rollers a, et, and

'UNITED STATESV THOMAS I-IUNTBATCH,

PATENT OFFICE.

or' HAMPTON, IOWA.

CAPSTAN.

SPECIFICATION forming part of Letters Patent No. 613,998, dated November8, 1898.

Application nea August 24,1893.V

T0 all whom, it may concern.'

Be it known that I, THOMAS HUNTBATOH, a citizen of the United States,residing at Hampton, in the county of Franklin and State of Iowa, haveinvented certain new and useful Improvements in Capstans; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in capstans, and particularly tothose designed for use in pulling stumps, though of course it could beused forpulling any other loadas, for instance, in moving houses and thelike.

The invention consists of certain novel constructions, combinations, andarrangements of parts, as will be hereinafter described'and specificallyclaimed, the construction being such that a great leverage is securedand the load to be drawn is thereby much more readily moved, theconstruction and arrangement also being such that in the event of thetension on the rope becoming so great as to break the same the sweepswill not be thrown against the horses heels, as sometimes occurs inother constructions when such accidents take place.

In the accompanying drawings, Figure l is a perspective view of myimproved capstan. Fig. 2 is a vertical section through the same, andFig. 3 is a top plan view thereof.

A in the drawings represents the frame of the machine, which may be ofany suitable construction. In this frame are provided near it-s top arealso provided other antifriction-rollers a et. A shaft B extendsvertically through the frame A and has a reduced metal end which has aseat in a metal bearing-plate in the lower part ofthe frame and bearsagainst the antifriction-rollers d ct and a a', so as to have a freemovement thereon. The shaft carries near its lower end a Winding-drum Cand at its upper end is preferably squared to receive a head D, whichlatter is rigidly secured to the said vertical shaft B and movestherewith. A power beam E rests on top of the head of the capstan and isconnected therewith and has free movement thereon by means of avertically-ar- Serial No. 689,415. (No model.)

ranged rod F, which extends into the vertical shaft B. Triangular-shapedsweeps F F are secured to the outer ends of the powerebeam E and aresupported at the proper height by means of stay-rods f, which extendfrom the outer ends of the power-beam to a sweep-stay G, to which theyare secured. The sweepstay is supported at the proper height by means ofthe iron rod F. The stay-rods f are provided with turnbuckles f2, fortightening them, and serve as tie-rods and sea curely brace and form asecure support for the sweeps. The sweeps are secured to the power-beamby bolts or in any other suitable manner.

H represents what I term a icapstandriver, and consists, preferably, ofan approximately U-shaped member constructed of iron, which isvertically and laterally movably secured to the power-beam by means ofan iron rod F, which passes through the same. The depending arms h h ofthe driver engage the headof the capstan D on opposite sides and whenthe sweeps are operated from left to right move it so as to wind up therope or cable on the drum and draw the load. In the event of the rope orcable breaking or slipping the sweeps will turn in the oppositedirection-that is, from right to left--at 'least a half-revolutionbefore the capstan-drver will be engaged by the power-beam and cause itto engage the capstan-head and revolve the said head and drum in areverse direction, which free play of the sweep will prevent the samefrom coming in contact with the heels of the horses, which would mostlikely injure or frighten the animals. I regard this as an importantfeature of my invention. It will also be observed that, by reason of themanner in which the capstan-driver H is constructed andarran ged on therod F and powerbeam E, when it is desired to wind the cable upon or fromo the drum without turning the sweepstayv it can be readily accomplishedby simply slidingthe capstan-driver H upon the vertical rod F andturning it so that the lower ends of the pendent arms h h will rest onlthe power-beam, whereby the power-beam will be disengaged from thecapstan-head and the cable can be readily manipulated without regard tothe power-beam and sweeps and horses attached thereto. The horses areat- IOC) tached to the sweeps at the points marked I I, which points,being on opposite sides of the power-beam and a considerable distancetherefrom, enables not only two teams to be employed, but also secures agreat leverage and enables a very heavy load to be drawn.

The machine may be mounted on tractionwheels, so that it can be readilymoved from place to place.

The machine is very simple in its construction and operation and frompractical tests has been found very efficient for the purposes intended.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a capstan, the combination with asuitable supporting-frame, of avertical shaft a winding-drum and a head, a power-beam movablehorizontally on the said head, and a pivoted, horizontally-swingingcapstan -driver carried by the said power-beam and adapted to beautomatically brought into engagement by the power-beam with thecapstan-head to revolve it in one direction and to be againautomatically brought into engagement by the power-beam with the saidhead to revolve it in the opposite direction in the event of the cablebreaking or slipping, a partial revolution of the power-beam in thereverse direction being permitted during the changing of the engagingpositions, substantially as described.

2. In a capstan, the combination with a suitable supporting-frame, of avertical shaft a winding-drum and a head, a power-beam movablehorizontally on the said head, sweeps attached to the power-beam andextending from the same in opposite directions, and a capstandrivercarried by the said power-beam and adapted to be automatically broughtinto engagement with the capstan-head to revolve it in one direction andto be again automatically brought into engagement with the said head torevolve it in the opposite direction in the event of the cable breakingor slipping, a partial revolution of the power-beam in the reversedirection being permitted during the changing of the engaging positions,substantially as described.

In a capstan, the combination with a suitable supporting-frame, of avertical shaft a winding-drum and a head, a power-beam movablehorizontally on the said head, triangular sweeps attached to thepower-beam and extending from the same in opposite directions, acapstan-driver carried by the said powerbeam, the said capstan-drivercomprising an approximately U shaped member, the depending arms of whichengage the capstanhead on its opposite sides but which are adapted to beturned automatically to engage the opposite ends of the capstan-head inthe event of the cable breaking or slipping, a partial revolution of thepower-beam in the reverse direction being permitted during the changingof the engaging positions of the arms, substantially as described.

4. In a capstan, the combination with a snitable supporting-frame, of avertical shaft a Winding-drum and ahead, a power-beam movablehorizontally on the said head, triangular sweeps attached to thepower-beam and extending from the same in opposite directions, acapstan-driver carried by the said powerbeam, the arms of which engageopposite sides of the capstan-head, a sweep-stay supported above thepower-beam by means of a vertical rod, and stay-rods connecting thesweeps with the sweep-stay for supporting and regulating the former,substantially as described.

5. In a capstan, the combination of asultablesupporting-frame,antifriction-rollers carried by said frame, avertical shaft a windingdrum and a head said shaft having a bearingcontact with said rollers, a power-beam movable horizontally on the saidhead, triangular sweeps attached to the power-beam and extending fromthe same in opposite directions, a capstan-driver carried by the saidpowerbeam, the arms of which engage opposite sides of the capstan-headand a sweep-st-aysupported above the power-beam by means ofavertical rodwhich extends through the capstan-driver, the power-beam and into thevertical shaft, the said rods connecting the sweeps with the sweep-stayfor supporting and regulating the former, substantially as described.

6. In a capstan, the combination with a suitable supporting-frame, of avertical shaft a head, a winding-drum, a power-beam movable horizontallyand independently of said shaft, and a centrally-pivotedvertically-movable capstan-driver which engages opposite sides and endsof the head of the vertical shaft, which driver is adapted to bedisengaged from the power-beam, and the head of the vertical shaft,substantially as described.

7. In a capstan,tl1e combination with a suitable supporting-frame, of avertical shaft a winding-drum, and a head, a power-beam movablehorizontally and independently of said shaft, a vertically movablecapstandriver having depending arms which are adapted to engage the headof the vertical shaft, when in a lowered position and to be raised so asnot to engage said head or be engaged by the power-beam, substantiallyas described.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

THOMAS HUNTBATCI'I.

Witnesses:

MINNIE AUSTIN, JAMES THOMPSON.

IOO

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